summaryrefslogtreecommitdiffstats
path: root/tools/virtio/ringtest/run-on-all.sh
diff options
context:
space:
mode:
authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-11 08:27:49 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-11 08:27:49 +0000
commitace9429bb58fd418f0c81d4c2835699bddf6bde6 (patch)
treeb2d64bc10158fdd5497876388cd68142ca374ed3 /tools/virtio/ringtest/run-on-all.sh
parentInitial commit. (diff)
downloadlinux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.tar.xz
linux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.zip
Adding upstream version 6.6.15.upstream/6.6.15
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'tools/virtio/ringtest/run-on-all.sh')
-rwxr-xr-xtools/virtio/ringtest/run-on-all.sh26
1 files changed, 26 insertions, 0 deletions
diff --git a/tools/virtio/ringtest/run-on-all.sh b/tools/virtio/ringtest/run-on-all.sh
new file mode 100755
index 0000000000..dcc3ea758f
--- /dev/null
+++ b/tools/virtio/ringtest/run-on-all.sh
@@ -0,0 +1,26 @@
+#!/bin/sh
+# SPDX-License-Identifier: GPL-2.0
+
+CPUS_ONLINE=$(lscpu --online -p=cpu|grep -v -e '#')
+#use last CPU for host. Why not the first?
+#many devices tend to use cpu0 by default so
+#it tends to be busier
+HOST_AFFINITY=$(echo "${CPUS_ONLINE}"|tail -n 1)
+
+#run command on all cpus
+for cpu in $CPUS_ONLINE
+do
+ #Don't run guest and host on same CPU
+ #It actually works ok if using signalling
+ if
+ (echo "$@" | grep -e "--sleep" > /dev/null) || \
+ test $HOST_AFFINITY '!=' $cpu
+ then
+ echo "GUEST AFFINITY $cpu"
+ "$@" --host-affinity $HOST_AFFINITY --guest-affinity $cpu
+ fi
+done
+echo "NO GUEST AFFINITY"
+"$@" --host-affinity $HOST_AFFINITY
+echo "NO AFFINITY"
+"$@"